| 摘要 |
A moveable gutter for a bowling lane is disclosed. The gutter includes a bumper surface that functions as a bumper when said inner edge is raised from a lower position to a fixed upper position higher than the adjacent lane surface. One or more illumination sources may be disposed along the surface of the gutter and bumper surface. A portion of said bumper surface is approximately parallel with the surface of a bowling ball on the bowling lane when the upper surface is in the upper position.
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